Statements of Operations (USD $)	3 Months Ended		6 Months Ended
	Jul. 02, 2011	Jun. 26, 2010	Jul. 02, 2011	Jun. 26, 2010
Income Statement [Abstract]
Product sales	$ 4,292,369	$ 4,970,762	$ 9,340,227	$ 10,006,231
Research and development under cooperative agreement	549,391	215,921	1,341,878	589,638
Total revenues	4,841,760	5,186,683	10,682,105	10,595,869
Cost of product sales	3,380,055	3,608,979	7,599,920	7,616,879
Cost of research and development under cooperative agreement	502,289	193,296	1,266,709	544,595
Gross Margin	959,416	1,384,408	1,815,476	2,434,395
Selling, general and administrative expense	927,068	663,419	1,744,014	1,426,473
Operating income	32,348	720,989	71,462	1,007,922
Other income (expense), net	(8,065)	(7,816)	(17,736)	(16,476)
Net income before income tax expense	24,283	713,173	53,726	991,446
Income tax expense	11,100	263,370	24,400	377,000
Net income	$ 13,183	$ 449,803	$ 29,326	$ 614,446
Net income per basic common share	$ 0.00	$ 0.04	$ 0.00	$ 0.05
Weighted average number of basic common shares outstanding	12,738,390	12,624,959	12,726,168	12,624,959
Net income (loss) per diluted common share	$ 0.00	$ 0.03	$ 0.00	$ 0.05
Weighted average number of diluted common shares outstanding	13,229,112	12,938,087	13,204,616	12,928,034